Ryan Neufeld wrote: > I've been working on learning Clojure after taking a course in Common > Lisp and I am having some troubles translating a particular Common > Lisp function to Clojure that uses mapping. > > We're defining a function that takes a function and two lists and > applies the function to each two items in the lists. Not particularly > safe or anything, but decent for learning. > > In CL: > (defun parallel (F L1 L2) > (mapcar #'(lambda (x y) (funcall F x y)) L1 L2)) > > (parallel '+ '(1 2 3) '(4 5 6)) ;; => (5 7 9) ;; Working correctly > > My attempt in Clojure: > (defn parallel [F L1 L2] (map (fn [x y] (F x y)) L1 L2)) > -- OR -- > (defn parallel [F L1 L2] (map F L1 L2)) > > however... > (parallel '+ '(1 2 3) '(4 5 6)) => (4 5 6) > > I gleaned what I could from the Clojure wiki but I'm still missing > something. > > Any pointers on where I am going wrong?
You've almost got it -- just don't quote the +: user> (parallel + '(1 2 3) '(4 5 6)) (5 7 9) By quoting the + you were passing in the symbol, not the function. Dean --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
